Project: Syngas Cleaning Pilot Plant

Technical Specifications

This is a continuous automated plant for cleaning of Syngas generated from a coal gasifier. This Syngas has impurities such as particulate impurities, NOx, SOx, H2S, CO2 etc. The plant is designed with packed columns to remove all these impurities. 230 nm3/hr hot syngas stream from coal gasifier outlet at 230 Deg C & 24 bar g is fed to the plant. It is passed through series of columns and a catalytic reactor to remove the impurities. First & second columns are aimed for direct quenching and dissolving water soluble impurities as well as removing particulate matter. After this, there is a catalytic reactor (containing the proprietary catalyst) to convert HCN traces in to CO2 and NH3. This is followed by a set of columns for Amine absorber-regenerator circuit where these gas impurities are absorbed/scrubbed. The washing section operates at high pressure (24 bar g) and Amine section at 5 bar g. Pressure and level in all columns are controlled automatically.

Pressure : 32 bar g Temperature : 190 Deg C Syn gas flow : 230 nm3/hr

ASME Section VIII Div 1

The facility also includes utilities such as Cooling tower with circulation system & Air compressor.

The total Plant operation is controlled using Allen Bradley PC-PLC system. The re-boilers and heaters were electrical with Auto temperature control, with high kW ratings up to 100 kW. Mobile control room with separate control and electrical marshaling cabinets.